Worst: This is a tough question to answer, because there are plenty of variables involved with guys who aren't actually playing, but the contender who would appear to be in the most trouble is Atlanta. For now, Dominique Davis is Matt Ryan's backup. Some in scouting circles really like the upside of David Cutcliffe pupil Sean Renfree, the Falcons' seventh-round pick out of Duke. But there's no doubt that there are a lot of unknowns here. If Ryan were to go down for even a few weeks, the lack of a proven No. 2 could come back to bite the Falcons.